Allah requires those who believe, to run fasting for a month during Ramadhan, as mention in the Qur'an Surah Al-Baqoroh : 183-184, with the mean :“O you who believe! Observing As-Saum (the fasting) is prescribed for you as it was prescribed for those before you, that you may become Al-Muttaqûn (the pious ). Observing Saum (fasts) for a fixed number of days, but if any of you is ill or on a journey, the same number (should be made up) from other days. And as for those who can fast with difficulty, (e.g. an old man), they have (a choice either to fast or) to feed a Miskîn (poor person) (for every day). But whoever does good of his own accord, it is better for him. And that you fast, is better for you if only you know.”

Besides that Muslims are also encouraged (sunnah ) performed fasting at the other times, such as: Monday and Thursday, and the day of Arafah. Prophet Muhammad shallallahu alaihi wasallam gave orders : “Fasting, sure you will become healthy”.

Clinically proven that fasting produces extraordinary powers effect for the body. When fasting, approximately 600 billion cells accumulate in the body itself in order to survive. The amount of power generated by the fasting mechanism of course can not be separated from power and grace of Allah SWT

Mechanisms of fasting does not only affect to the health of physic, but also to the spiritual health for those whom fasting.

FASTING BENEFIT ON PHYSICAL HEALTH The human body is equipped with the ability of natural therapies. In the condition the body does not even conceded a grain of rice, people would still have reserves of energy called glycogen. Obtained from carbohydrate reserves can last for 25 hours. Thus, those who run fasting is not worry about becoming sick because your body has a natural mechanism to defend himself. Even with fasting, the body endurance became stronger.

The effect of fasting on physical health include:

1.Give opportunity to Digestion tool of the Body for rest. In the days when someone was not fasting, digestion tool of the body work extra hard. Therefore, this digestion tool should giving a rest , at least one month in one year.Food that comes into the body in the digestive process requires approximately 8 hours, I.e. 4 hours of being processed in the stomach and 4 hours in the small intestine. If in the fasting month we do the meal ( sahur ) at 4 o'clock in the morning, then at 12 o'clock digestion tool finish work. From 12 o'clock noon until time to break the fast, approximately 6 hours digestion tool experience complete rest. This occurred during a month.

2.Free our Body from Toxins, Dirt, and WasteIn the human body there are hazardous wastes, such as feces, urine, CO2, and sweat. By fasting, which means limiting the supply of food that enters the body, an accumulation of toxins, dirt, and garbage in the body can be prevented, so that clean your body from toxins, dirt and residue.

3.Make Skin Healthier and ShiningWhen fasting, the energy reserves stored in body organs removed, so that relieves respiratory organs and also its storage cells. This mechanism is commonly known as cell rejuvenation. Therefore, if the people who frequent fasting, their skin more fresh and soft.

4.Blocking Food for bacteria, viruses, and cancer cellsIn the human body there are parasites that ride of life, including a ride to eat and drink. By stopping the entry of food, disease germs, bacteria and cancer cells can not survive. They will go out through body fluids with cells that have died and toxins.

5.Adding Amount of White Blood Cell and Increase Body EnduranceAccording to the research at the University of Osaka, Japan, after entering the 7th day of fasting, the number of white blood cells in the blood of people who are fasting is increasing. In the first week (day 1st till the 6th ) of fasting, can not find the growth of white blood cells, but at day-7 until day -10, the addition of white blood cells very rapidly increasing. Addition of white blood cell amount was automatically boost immunity. White blood cells are working against inflammation in the body, so that why many inflammatory diseases could be cured by fasting. Besides that, the lymph cells within the white blood cells have a potency to destroy cancer cells, that called cell vaccination.

6.Increase the Food AbsorptionBased on the science of nutrition, most people can only absorb nutrients as much as 35% of the nutritional food that He/She consumes. By fasting, nutrient absorption may reach 85% ,because during fasting digestion tool rest for approximately six hours, this increasing the efficiency of digestion in reducing and absorbing food.